Temporal variation of nitrogen oxide fluxes from agricultural soils in the Upper Coastal Plain of North Carolina
Book
·
OSTI ID:197359
- North Carolina State Univ., Raleigh, NC (United States). Dept. of Marine, Earth and Atmospheric Sciences
Measurements of soil flux of NO show that in some cases these emissions rates are comparable to anthropogenic emissions in urban areas, contributing to rural O{sub 3} formation. Soil NO flux measurements were made from 18 Aug 1993 to 1 Sep 1993 and from 7 Feb 1994 to 23 Mar 1994 in the Upper Coastal Plain of North Carolina in an effort to determine the magnitude of the fluxes and the relationship of natural NO emissions to typical agricultural management practices. The overall average NO emission rates (using a dynamic chamber technique) during the summer varied in proportion to the amount of applied fertilizer N to each crop. For the winter period, the measured emissions followed the carbon-nitrogen ratio of the plant residue plowed back into the soil after the fall harvest. The NO flux rates were negatively correlated to soil temperature.
- OSTI ID:
- 197359
- Report Number(s):
- CONF-9405167--
- Country of Publication:
- United States
- Language:
- English
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